Order now the 2085-EP24VDC, an essential power expansion module designed to support high-density I/O configurations in Micro850 and Micro870 systems.
What Is the 2085-EP24VDC?
The 2085-EP24VDC is a specialized power supply module that provides additional backplane power to the 2085 expansion bus. In large-scale automation projects where numerous high-draw modules (such as high-density analog or relay modules) are attached to a single Micro850 or Micro870 controller, the integrated power supply may reach its capacity. The 2085-EP24VDC bridges this gap, injecting the necessary 5V and 24V DC currents into the expansion bus to ensure all downstream I/O modules function correctly and maintain signal integrity.
Key Technical Specifications
- Input Voltage: 24V DC (nominal)
- Input Range: 20.4V to 26.4V DC
- Output Current (Backplane): 1.1A @ 5V DC / 0.4A @ 24V DC
- Inrush Current: 30A for 10ms
- Isolation: 500V AC (input to backplane)
- Mounting: DIN Rail (Right side expansion)
Industrial Reliability and Power Management
The 2085-EP24VDC acts as a power repeater within the stack. It is vital for maintaining the communication speed and stability of the system. Without sufficient backplane power, expansion modules may exhibit intermittent communication faults or fail to power their internal optocouplers. This module is engineered to handle the harsh transients found in industrial environments, featuring reverse polarity protection and a rugged housing consistent with the rest of the Micro800 family.
Expert Tips
When calculating your system’s power budget in Connected Components Workbench, if the «Current Used» exceeds the «Current Available,» the 2085-EP24VDC must be placed in the rack. For optimal stability, place this power supply immediately before the modules that have the highest current consumption. Always use a dedicated, high-quality 24V DC external power source with sufficient wattage to handle the 30A inrush current of this module during startup.
Frequently Asked Questions
Q: Does the 2085-EP24VDC provide power to field-side devices?
A: No, this module only provides internal power to the PLC backplane (the 2085 bus). Field devices like sensors and actuators must be powered by a separate external power supply.
Q: Where should I place this module in my PLC rack?
A: It can be placed anywhere in the expansion stack, but it is technically recommended to place it between groups of I/O modules that total more than the base unit’s power capacity.
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